Shock-absorber.



c. P. o, BRBTSCHNBIDBR.

SHOCK AB'soRBBR. APPLic'ATIoN rI LnD-AUG.2o, 1913.

'Patented' @11.20, 1.914,

Ffa J,

Moo/Mov FIG M UNITED .Sirarns PATEN T DFFICE.

SHOCK-ABSORBER.

Specification of Letters atent.

Patented J an. 20, 1914.

Application led August 20, 1913.y Serial No. 785,609.

following is a specification', kreference being had to the accompanyingdrawings.

My invention 1s especially. intended for use 1n connection with automobiles, and will,

therefore, be described in its relation to the'.

suspending springs which are ordinarily in use in such structures. u i

In the drawings, Figure I, represents a view in side elevation of the exterior of the device, showing adjacent portions of the spring members connected to the chassis of the vehicle. Fig. II, is a vertical longitudinal section on the line II, II, of Fig. III. Fig. 'III,; is a vertical. longitudinal section on the line III, III, of Fig. II. Fig. IV, is a view in perspective of the interior face of one of the side plates which I employ. Fig. V, is a horizontal transverse section on the line V, V, of Figs. II, and III.

`One of the principal objects of my invention is to provide aproperly responsive cushioning action whose tension may be adapted to the conditions found in a given instance, and to combine the parts in such a manner as to afford the greatest structural strength, while facilitating assemblage. rcmoval and replacement of individual members.

Referring to the drawings. 1, represents the cylindrical external casing at whose lower end isa cap 2., internally threaded to engage Awith a correspondingly threaded lower portion of the casingl, as indicated at 3. The casing 1 ;is provided at its upper end with an overhanging integral flange 4, which extends partway across the top, terminating however. in a. straight line considerably short of the axis of the casing. The casing l. is also provided with two vertical brackets T, and 9. which are,,preferablyv cast integral therewith. and which. extend some distance above the top oi the casing. as shown` the longitudinal center brackets being diaim\tricall \v arranged with relation to the axis ot the casing. sido opposite to the ovcrbanging flange l.

the. wall of the casing is cut awa \v as inflii cated at. l0. leaving an opening which is subof said (lu the stantially zzo-extensive in a vertical direction with the amount of play required for t-he spring. i g

A cap or cover 12, having a disk shaped upper portion tits snugly between' the vertical brackets 7, and 8, and beneath the flange 4. -Said cap is provided with a depending flange 13, adapted to overlap and embrace the proximate wall of the casing at the region adjacent to the opening 10, the depth .of thisV flange 4being such that in the extremtv upper position of the cap, the wall 13, will shield said opening. A shallow groove 16, extends diametrically across the cap at the region between the brackets in order to permit convenient application of .the supporting spring. Said cover has, on 'its lower side. a depending cylindrical guide piece 17. Vertical slots 20. and E21. are formed through the wallsof the brackets 7. and 8, extending from substantially the level of the top of the tiange. 4. down to the level of the bottom of the opening 10. Said walls are externally covered by the removable side pieces 25, and Q6, which are provided with vertical trough shaped guides 9.7, and 28. On their internal faces said guides extend through the slot-s, so that the inner edges of the. guide is about flush with the inner face of the brackets. These side pieces are held in position by screws. 31, atthe lower endv and at the upper end by the transverse bolt 32. Spiral springs 34:. and 35. having their coils disposed in inverse relation, are arranged within the casing. the inner spring 35 embracing the depending guide piece 17. of the cap 12. The lower ends of said -springs bear upon the removable cap 2. while the upper ends bear against the end surfaces of the cap 12. A transverse bolt 36. extends across between the brackets 7. and S. at the region immediately adjacent to the top of thecap l2. the ends of .said bolt being received within the. guides QT. and 28. Said bolt is. therefore. susceptible of vertical play along with the cap in said guides. second transverse boltl ft2. rigidlyv secured across between the upper ends of the brackets. said bolts. as beton` stated. l serving to retain in i'iositinn the applV ends of the side pieces and '20. The upu por spring mouiller lll. of the vehicle is attached lo this lower bolt EJ. while the i lower spring member 4l ot the vehicle is at bolt 36, is inserted laterally, and the side piece is then secured in position. As will be seen from the above description, the other portions of the device are readily assembled and removed.

In operation the lower cap 2, can be adjusted at different heights, s'o as to modify the tension of the springs.

In operation the vertical play of the upper cap 12, Within the limits afforded by the overhanging flange 4, and the bottom of the opening l0, corresponds with the reuired range -of movement .permissible for t 1e spring device, and it will be noted that the wall 13, at all times completely inclos'es the opening 10, so that access of dirt is pre` vented.

Having thus described my invention, I claim:

The combination of the' cylindrical casing,

having a screw cap, at its lower end, and provided with a limited 'overhanging flange at vits upper end; and also provided with a vertical opening in the Wall opposite to said flange; vertical brackets diametrically arranged withv relation to said casing, said brackets'bein provided with vertical slots; removable si e plates 4provided with guides which fit WithinA said slots, and meansffor attachment to said brackets; a cover having an axial depending guide, and a lateral depending wall, thelatter being adapted to inc-lose the opening in the' casing; a transverse bolt extending d iametrically across the cover and engaged at each end in the guides of the side pieces, andasecond transverse bolt rigidl secured near the upper extremities of the brackets substantially as set forth.'

In testimony whereof, I have hereunto -signediy name at Philadelphia, Pennsyl- 'vania this. eighteenth day of August, 19l3.

CAR-L P. C. BRETSCHN EIDER. Witnesses:

JAMES H. BELL,

E. L. FULLERTON. 

